Diodes Incorporated DTH810D

Overview

DTH810D from Diodes Incorporated is an 8A, 1000V hyper-fast recovery rectifier diode in TO220AC package, featuring 65–85 ns reverse recovery time, 1.32–2.0 V forward voltage at 8A, and 5 µA reverse leakage at 1000V/25°C. It serves as a primary output rectifier or freewheeling diode in high-frequency SMPS, LED drivers, and battery chargers requiring low switching loss and thermal stability.

For engineers reviewing the DTH810D datasheet, DTH810D pinout, DTH810D application, or DTH810D equivalent, key selection criteria include its 1000V VRRM rating, soft recovery behavior for EMI reduction, TO220AC thermal resistance (RθJC = 2°C/W), and suitability for critical-mode PFC stages where fast tRR and low VF directly impact efficiency and MOSFET stress.

Technical Context

This hyper-fast recovery rectifier employs glass-passivated silicon die optimized for high dv/dt immunity and soft reverse recovery-critical for minimizing voltage overshoot and ringing in hard-switched topologies. Its 65–85 ns tRR is measured under standardized conditions (VR = 30V, IF = 1A, dIF/dt = −50 to −100 A/µs), enabling reliable operation in 100–500 kHz SMPS designs.

The device delivers 8A average forward current at TC = +120°C with RθJC = 2°C/W, supporting direct heatsink mounting via the metal tab (Pin 2). Its 1000V blocking capability and 80A non-repetitive surge rating (10 ms half-sine) allow robust handling of transient overloads in AC-DC front-end and offline DC-DC converters.

Key Specifications

Pinout & Package

Package: TO220AC (Type WX), single-diode configuration with isolated metal tab (Pin 2 = cathode), matte tin-plated leads, UL 94V-0 molded plastic housing weighing 2.24 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage, hyper-fast rectifier applications.

Compared with STTH8R06D and MUR8100E, DTH810D uniquely balances 1000V blocking, 65 ns tRR, and 1.32 V VF-making it optimal for next-gen 800V-output SMPS where both voltage headroom and efficiency are constrained.

Availability

DTH810D is available at Aetrix Electronics and suitable for LED lighting drivers, USB-C power adapters, and industrial battery chargers requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for DTH810D includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-efficiency power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The DTH810D belongs to Diodes' Hyper-Fast Recovery Rectifier product line, engineered specifically for high-frequency, high-efficiency AC-DC and DC-DC conversion where low tRR, soft recovery, and thermal robustness are essential.

FAQ

Is DTH810D suitable for use in automotive applications?

No-DTH810D is not AEC-Q101 qualified. An automotive-compliant variant, DTH810DQ, is available under a separate datasheet and undergoes extended temperature and reliability testing per automotive standards. Standard DTH810D is rated for industrial temperature range (−55°C to +150°C) but lacks automotive qualification documentation.

What is the correct mounting orientation for thermal performance?

Mount the TO220AC tab (Pin 2, cathode) directly to a heatsink using thermal interface material. The tab is electrically isolated, allowing grounding to chassis or circuit common. Avoid insulating washers unless required by safety isolation-doing so adds ≥0.5°C/W thermal resistance and degrades RθJC performance.

Does DTH810D require a snubber circuit in typical SMPS designs?

Snubbers are generally unnecessary due to its soft recovery characteristic and low stored charge. In quasi-resonant or LLC topologies with controlled zero-voltage switching, no snubber is needed. In hard-switched flybacks above 200 kHz, a small RC snubber (e.g., 100 Ω + 100 pF) may further suppress ringing but is not mandatory per datasheet validation.

How does the 5 µA IR specification impact system-level leakage?

At 1000V reverse bias and 25°C, 5 µA leakage contributes <5 mW of static power loss per diode. In multi-phase or parallel configurations, total leakage remains negligible (<0.1% of full-load power), preserving standby efficiency and hold-up time without requiring additional balancing components.